plugins/properties/testData/duplicateProperty/duplicateKeys/expected.xml

<?xml version="1.0" encoding="UTF-8"?>
<problems>
  <problem>
    <file>Test1.properties</file>
    <line>1</line>
    <description>Duplicate</description>
  </problem>
  <problem>
     <file>Test2.properties</file>
     <line>1</line>
     <description>Duplicate</description>
  </problem> 
</problems>